Bumper construction



July 29, 1930. H. s. JANDUS BUMPER CONSTRUCTION Filed May 1929 ww\\\\\ a a 2 [NV ENTOR ATTORNEY Patented Jul 29, 1930 1 HERBERT S.

MICHIGAN; AssIGNon. To, 7 A CORPORATION on i MICHIGAN Y GENERALV mime Bemme mmma f Application filed May 3; 1e29, s ialnti seeaaa This invention relates to bumpers for vehicles and particularly to bumpers of the type wherein it is necessary to provide holes in the bars for securing them together or to the frame horns of thevehicle.

Ithas been found that where they bumper and particularly the back bar of a bumper made of flat bar material is provided'with holes to receive the attaching screws or bolts, the baris greatly weakened at those points. This type of mounting is, however, desirable in some cases and it is the object of my invention to provide a bumper, the bars of which may be of substantially the same weight as the bars heretofore used and which may be pierced to receive the securing bolts without materially decreasing the strength of the bumper at those points.

- vehicle; F ig. 2 is a perspective View of a por In the drawings Fig. 1 is a plan View of a bumper constructed 1n accordance with my nvention, secured-to the frame horns of a tion of the rear bar of the bumper; Fig. 3 is a sectional view taken F ig. 4c is a sectional View taken on the line l of Fig. 1; Fig. 5 is a sectional View similar to Fig. 4 showing a modified form of rear bar construction; and F ig. 6 is a similar view showing the same type of bar as shown in Fig. 5 when used with the flat side forward. In describing my invention, reference is made to the accompanying drawlng which forms a part of this specification and in whichlike reference numerals are used to designate like parts in the several views.

The embodiment of my invention illus- "rated in the accompanying drawing comprises a bumper having a front impact section 10 made up of two vertically spaced horizontal bars 11 and 12, the ends of which are curved rea rwardly and connected. by means ofbolts 13 which extend through eyes at the ends of the barssto a back 'supporting bar 14 provided with eyes at its ends, in the manner shown and described in the patent to Jandus et alI' No. 1,691,886, issued N ovemher 13, 1928.

The back bar 14, as illustrated, has itscentral portion bent forward into' close proximon the line 3-3 of Fig. 1; l

and 12m which it-is' se'euredl V The'fba'ck bar 'l iyit' *will' be noted, is proitytothe c efia-ai'ptrata of the front vided with apertures QOfor thereceptiouof screws 21 103 which thebumper is securedto the frame horns 22. of the vehicle, and 1 also} with an aperture 23 at its central portion I to receive the clamp bolt 524;which}"secureslthe baek'bartothefront' bars. I 1

When'the back bar of thebumperis made of flat "bar material, it is grea'tly weakened at the point where, the apertures 20 311(123 are formed. To overcome this defect Iprovidea back bar of "approximat'elythe same weight as heretofore used, but so constructed that the bulk ofthe material isalong theedges25 of the b'ar' leaving a "relatively thin' Weber 7 sectioirat the center 26asshown inthe;draw-Q ings. l With such a construction the amount; of material removed improvidin the aper-f tu'res ;20 andj23 is relat ivelyf'small. j' It has been found that-such a baris materially stronger than v ordinary fiat section with (similar holes punchedtherein fl y f In'Figs 2, 3 and 411mm" shown abar 14; where the thinweb 26 is-in-the center of the edge portions 25 providing a channel'at each side Whenso' of the vehicl'e 'may beformed with afboss"30 over which the bar 14 engagesyand a'clamp plate 31 provided gaging inthe'front facefofthe bar and through which the screw 21 passes tojhold the bumper rigidly to the frame.

In Figs 5f and 6 amodified form ofback,

bar is shown'where ne same weight of bar of the constructed, the frame horn with a similar ,boss 32 en i case the ar may be turned with its plane side;

against' the-frame m; 22, in' which case no boss on the same is'necessaryjandthe clamp plate 31 thesame as shown in With the plane side ofthefbar forward as illustrated in Fig. 6, the clampplate 311*I'nfa'3"; of coui se,'beomitted.

bars 11, 12 and '14" togethem a front clamp plate 35 having a boss 36 onfitsrear fa ceis provided, the} bosses fitting betweenand Spacing tl1e;bai"s"-1l*and '12 apart; "A secon'd In securing "the" central portions of the flat clamp plate 37 is interposed between thebars'll and 12 and the back bar 14k and the bolt 24 passed through aligned apertures in the clamp plates and back'bar. Where the back bar is channeled onits rear face, an aperturedfiller block 38 is fitted in the channel on 'thefboltlfi to provide a bearing surface for the lock washer 39 and nut 40.

H YVith the rear bar of the bumper construeted as described, a materially stronger bumper is provided than where flat bar material of the same weight is used. It is, of course, apparent that the bar section may be made in other shapes than rectangular as shown, as long as a relatively thin section is provided atthemiddl'e through which the signature.

.. HERBERT S. JANDUS.

bolt holes may beformed. The particular I sections shown arie preferred, however, becausein rolling; eyes at the ends of the bar the fiat sections nearvthe outer edges provide bearing surfaces for the endbolt of the bumper and facilitate the rolling of aneye Qf't pr p orm.- v

Having thus described my invention, what Iclaini is: i r 7 t-lpln combination with the frame. horns of vehicle having clamping faces to which the. back bar eta-bumper is adapted to be e ur d by b mean p i g dir t y through said bar. e'bumper ha ge back bar provided with apertures through which id bolt means pass, a d-b ck a i g channel shape in section with the greater bulkof the material disposed along its, edges, a thincentral web, said apertures being iorniedin the thin web. portion o t-said.

bar, a clampipl te t roug w h, aid b t means passes arranged on the'opposite side o i h balif m th f ame r d p vided with a clamping face,aboss on one of said clamping-faces fitting into the channel 7 in said bar whereby when the bolt means is tightened the bar is rigidly secured iii-place.

'2. A vehicle bumper organization-including vehicle, frame horns having clamping faces. a bumper back bar having a longitudinalchannel in each facethereof, and clamping means for holding said back bar in fixed relatiQn to said horns, said clamping means including bosseson said horns adapted to fit intoone of the channels of said bar and bolts passing throughfboth said channels and threaded into said hornsl; 13: A vehicle-bumper organization includa i cl pin ces-t bumpe nsi t w r ha i a l ne t nal ehannel infeach face thereoi, and clamp ug meansh ding said ba k ba n fixed re atiow e said horns, said. lamping m ans including plates having bosses for engages meat with ne-sf said-chan els and, b l s passing the-we l Enidosses andboth said ehann'e and threaded in s i horn 4.- Awdml bump r rgen eti ninclud in vehicle fra me- "horns having clamping horns adapted to fit v l'ZO 

